Outboard-motor for boats



1.1 JQCLEMENTSON. OUTBOARD MOTOR FOR BOATS.

APPLICATION FILED APR-271 i9 20.

Patented June 28, 1921.

2 SHEETS-SHEET I. I

Invenl'or' JZE'J Clemeni'son 5 LIT/f y .I. F. J. CLEMENTSON.

OUTBOARD MOTOR FOR BOATS.

APPUCATION FILED APfLZT, r920.

Patented June 28, 1921.

2 SHEETS-SHEET}.

55 I two bevel gear wheels 4 and 5, each of which omino- STATES PATENTounce. I

com rnannwmn In ros n, or muo, swarm.

OUTBOARD-HECTOR FOB BOATS.

To all it may concern:

Be it knownthat I, Jormn Fnnnmmn J mos Crimmn'rsoiv, a citizen of theKingdom of Sweden, residing at Mahno Sweden, have invented a new anduseful lmprov ment in Outboard-Motors for Boats, of which the followingis a specification.

My invention relates to an improvement in outboard motors for use insmaller boats, wherein the motor shaft is cared to the propeller shaftby means of a ouble bevel car, so that the propeller may be reve bysliding the gear wheels placed on the motor 'shaft or an extensionthereof, said gear possible to handle the machinery in a wrong wheelsalternately being .brought into gear with a gear wheel on the propellershaft.

Such a reversing device, althoughfibeing of.

a simple and attractive construction, has however a drawback thereinthat the reversing or starting of the propeller when the motor is runmngtakes place abruptly and with a considerable shock when the gear wheelsare thrown into ear, and this circumstance causes a rapi wearing or abreaking of the gear if the motor is not slowed down when the reversingtakes place.

In itself it is troublesome and less attractive and combined with thecommon tiller in such a way, as is explained below, that the reversingcannot take place before the coupling is disconnected. Thus it is imway,which may be risky to the gear. The invention is illustrated in theaccompanying drawings wherein Figure 1 shows the outboard motor inverticalsection. Fig. 2 shows a sectional view of the locking device forthe tiller and Fig. 3 shows a side view of the said tiller and enactingparts of the machinery. Fig.- 4 is across section on the line 1-4 inFig. 3 and Fig. 5 a similar section on the line 5-5 in Fig. 1. Withreference to the drawings 1 indicates the motor, and 2 the crank shaftof the same. 3 is a shaft placed in the prolongation of the crankshaftand carrying .pe'ller the shaft 3 must Sp fi a of t hunt- PatentedJune 28, 1921 Application fled s in :7, 1920. Serial Io. mp4s.

by sliding the shaft Balternately-canbe" brought into gear with thebevel gear wheel the propeller y shdmg the shaft 3 an the gear wheels 4,5 the rotary motion of the r be reversed, and it may also be the gearwheels 4,5' are brought into an intermediate position, in which neitherof them is in engagement with the ear wheel 8. For reversing or sto pingo the pro or downward and this movement is effected by means of thetiller-9, said tiller bein made to turn around a in gtlO and locke to aquadrant 11, whic together with-saidpin is fixed to-a casing 12vsurrounding the e moved upward opeller may; stopped if i shafts 2 and 3and turnable around saidshafts.

According to my invention the shafts 2 I and 3 are connected with eachother by means-of a friction couplin thrown into action by the tiller.For the pur ose the end of the crank shaft 2 is provide with a prismaticextension 13 upon which a. nonrotatable sleeve 14 is slidably mountedsaid sleeve at its lower end being provided with with a cellar or outersleeve 18, which partly surrounds the inner sleeve 14. Between thebottom of the cup 16 surrounding the flange 15 and the inner end of aconcentrical bore within the sleeve 14 a spiral spring 19 surroundingthe shaft 3 is arranged, said spring tom of the cup 16. Between theflange 15 and the cover 17 a number of annular friction plates 32 isarranged, said plates being alternately provided with lugs penetratinginto longitudinal grooves in the'inner side of the cup and other lugspenetrating into similar grooves in the outside of the sleeve tionplates connected with the sleeve in the same manner do not extendentirely to the cup and may be rotated in relation to said cup. Byreason of the spring 19 all of the plates however are pressed togetherbetween e 15. On the vshaft "3 beneath the sleeve 14 a cup 16 is fixedthe upper end of which is closed by a cover plate 17 connected normallytending to force the'inner sleeve 1d and the flange 15 upward from thebotthe flange and the cover 17 and thus the pzilritsh' described form afriction coupling, V w c maybe disconnected by releasing the springpressure. In order to obtain a good bearing the shaft 3 however extendswlthin the sleeve 151 (Fig. 1) but it is freely rotatable within thesame and thus it does not always partake in the rotary motion of thesaid sleeve 14:, which rotates constantly as I 10 lover .or

9 is disconnectibly locked to 'the quadrant 11 by means of a bolt 22(Fig. 2) connected with a link 23,-which is acted upon by a grip 24hinged to the outer end of the tiller;

For disconnecting the coupling a ring 25 is fotatably but not slidablymounted on the the fork shaped arms 27 of levers 27, 28

sleeve 14 said ring being provided with extending pins 26 suitablyplaced right above the pins 20. The pins 26 are inclosed by Fig. '3)pivotally mounted upon pins 29 ed to the. tiller 9'. The other arms 28of the levers are hinged to a U-shaped bar 30 connected with anextension 31 of the link 23, said extension being arranged on the oppgsite side of the bolt 22 (Figs. 3 and 4). e device described works inthe followmanner a 1 y rovided that the motor and ropeller are at fullspeed and the difli'erent parts of the machinery are in the positionsshown in Fig. 1 and that reversing or stopping of i the propeller is .tobe carried out,'said r'e versing or stopping must be efiected by raisingthe tiller to one of the positions indi cated by the dash and dot linesshownin the drawing. For carrying out this movement of the tiller thebolt 22 must be disengaged and forthis purpose the grip 24 'must beressed against ereby however the ,extension 31' the tiller, i.- e.upward. andthe bar 30 cause. the levers '27, 28 td 'be turned in such away that the pins 26 are pressed downward. The ring 25 thereby pressesthe sleeve 14 together with the flange 15 downward against the pressureof the spring 19. Thus the coupling is positively disconnected beforeany vertical movement of .the tiller 9 is possible .and therefore it isimpossible to omit the disconnection ofthe coupling.

Itjis not necessary to .iise a frictioncoupling, as the coupling alsomay be provided with claws in the usual manner, but a fricthe ' tudinaltion coupling is however to be referred as I it renders a softerstarting of t e propeller after the reversing, and it is not necessaryto carry out all of the parts of construction exactly in the mannerdescribed above or shown in the drawings as they may also be changed forequivalent means without digresslng from the scope of invention.

Having now described my invention and in what manner it is to beperformed l dsclare that what I claim is: a 1. Outboard motor for boatscomprising a reversible double bevel gear for transmitting the rotarymotion of the motor to' the propeller, a shaft slidably mounted in theprolongation of the motorshaft and carrying two of the bevel gear wheelsof said gear, a disconnectible coupling between said shaft lastmentioned and the motor shaft and means for connecting the disconnectingdevice of said coupling with a locking device for the reversingtiller insuch a way that the coupling: is disconnected automatically at thedisengaging of said locldng device.

2. Outboard motor for boats comprising a reversible double bevel gearfor transmitting the rotary motion of the motor to the propeller, ashaft slidably mounted in the prolongation of. the motorshaft and carry:ing .two of the bevel gear wheels of said gear, a disconnectiblefriction coupling be-.

tween said shaft last mentioned and the motor shaft and means forconnecting 'the disconnectingdevice of said coupling with alockingdevice for the reversing tiller in such a waythat the coupling isdisconnected automatically locking device.

3. Outboard motor of the character described comprising a motor, apropeller and a disconnectible friction coupling between the motorshaftand theshaft placed in its prolongation, said coupling consisting of aninner sleeve slidably but not rotatably mounted on the motor shaft andprovided with a flange, a cup fixed to the extension shaft and providedwith a cover, and an outer sleeve fixed thereto, said cup and lastmentioned sleeve partly surrounding .the inner sleeve and the flangethereon, a number of annular friction p of the cup and provided withlugs alternately intruding in corresponding longives at the inside ofthecup and the outs de of the inner sleeve, and a spring placed betweenthe cupand the inner sleeve geth'er. Y

4. Outboard motor of the character -described comprising adisconnectible friction at the disengagingof said ates placed between.the flange of the inner sleeve and the cover r and tending to press thefriction plates tobetween the motor shaft and a 1 g r sha p aced m itsprolongation, said cou-e pling consisting of an inner sleeve rovidedwith a flangeand an outer sleeve ed to a cup surrounding said flange anda number with a flange and an outer sleeve fixed to a cup between acover of which and said flange is arranged a number of friction platesacted upon by a spring tending to press the friction plates together,both sleeves being provided with rings rotatably but not slidablymounted on said sleeves, the ring on the outer sleeve being hinged tothe tiller and the ring on the inner sleeve to levers carried by thetiller and connected by means of a U-shaped bar hinged to an extensionof a link for acting upon the looking bolt of the tiller by means of alever hin ed to the outer end of said tiller and to sai link. i

6. An outboard motor for boats, comprising a motor, a propeller, areversible connection for transmitting and reversing rotary motion fromthe motor to the propeller, and a disconnectible friction element.interposed between the motor and reversible connection for automaticallydisconnecting the propeller from the motor during the reversing of saidreversible connection.

7. An outboard motor for boats, comprising a motor, a propeller, areversible connection for transmitting andreversing rotary motion fromthe motor to the propeller, a disconnectible friction element interposedbetween the motor and reversible connection, and means for operatingsaid connection for reversing the rotary motion being transmitted, saidmeans automatically disengaging the frictionelement.

the propeller and adapted to transmit rotary motion thereto and toreverse the direction of said motion, a disengageable friction memberconnecting the shaft with the motor and means for operating saidelements adapted to simultaneously disengage said friction member.

10. An outboard motor for boats, comprising a motor having acrank-shaft, a propeller, a shaft slidably mounted in line with saidcrank-shaft, a disengageable friction element connecting the shaft withthe crankshaft, elements adapted to transmit rotary motion to thepropeller, said elements being further adapted to reverse the motion ofsaid propeller, and operating means for actuating the elements toreverse the direction of the propeller, said means having connectedtherewith means for simultaneously disengaging the friction element whenthe operating means is actuated to reverse the direction of thepropeller.

11. An outboard motor for boats comprising a motor having a crank-shaft,a propeller, a shaft slidably mounted in line with the crank-shaft, adisengageable friction clutch member including a pair of sleeve members,one secured to the crank-shaft, the other secured to the shaft, a seriesof plates carried by each adapted for frictional engagement, meansadapted to operate the sleeves to engage or disengage said disks,

elements mounted on the shaft adapted to transmit rotary motion to thepropeller, said elements being adapted to be operated to reverse thedirection of the propeller, and means for operating the elements, thelastmentioned' and the first-mentioned means being adapted to operatetogether. 1

12. An outboard motor for boats, comprising a motor having acrank-shaft, a sleeve slidably mounted on the end portion of sa1dcrank-shaft, a second sleeve mounted over the first sleeve and extendingbeyond the end of the first sleeve, a series of disks, al-

ternate disks being mounted on each sleeve and adapted for frictionalengagement, re-

silientmeans interposed between the sleeves acting normally to bring thedisks into frictional engagement, a shaft connected with thesecond-sleeve, a propeller, elements connecting the shaft with thepropeller for transmitting and reversing rotary motlon thereto, a leverconnected with the elements and connections between the lever and thesleeves, whereby when the lever isoperated will at the same timedisengage the disks between the sleeves.

to reverse the direction of the propeller, it

In testimony whereof, vI have signed my name to this specification inthe presence of two subscribing witnesses.

JOHAN FERDINAND JULIUS CLEMEN'I'SON. Witnesses A. L. HEDENSHRE, J. P.Wnronn;

